Robust Data Pruning under Label Noise via Maximizing Re-labeling Accuracy (NeurIPS 2023, PDF)

by Dongmin Park¹, Seola Choi¹, Doyoung Kim¹, Hwanjun Song^{1, 2}, Jae-Gil Lee¹.

¹ KAIST, ² Amazon AWS AI

• Sep 22, 2023: Our work is accepted at NeurIPS 2023.

Brief Summary

• Prune4ReL is a new data pruning method for Re-labeling models (e.g., DivideMix & SOP+) showing state-of-the-art performance under label noise.
• Inspired by a re-labeling theory, Prune4ReL finds the desired data subset by maximizing the total reduced neighborhood confidence, thereby maximizing re-labeling & generalization performance.
• With a greedy approximation, Prune4ReL is efficient and scalable to large datasets including Clothing-1M & ImageNet-1K.
• On four real noisy datasets (e.g., CIFAR-10/100N, WebVision, & Clothing-1M), Prune4Rel outperforms data pruning baselines with Re-labeling models by 9.1%, and those with a standard model by 21.6%.

How to run

Prune4ReL

Please follow Table 7 for hyperparameters. For CIFAR-10N dataset with SOP+ as Re-labeling model,

python3 main_label_noise.py --gpu 0 --model 'PreActResNet18' --robust-learner 'SOP' -rc 0.9 -rb 0.1 \
          --dataset CIFAR10 --noise-type $noise_type --n-class 10 --lr-u 10 -se 10 --epochs 300 \
          --fraction $fraction --selection Prune4Rel --save-log True \
          --metric cossim --uncertainty LeastConfidence --tau 0.975 --eta 1 --balance True

More detailed scripts for other datasets can be found in scripts/ folder.

Data Pruning Baselines: Uniform, SmallLoss, Margin, Forgetting, GraNd, Moderate, etc

Basically, the script is similar to that of Prune4ReL. For example,

python3 main_label_noise.py --gpu 0 --model 'PreActResNet18' --robust-learner 'SOP' -rc 0.9 -rb 0.1 \
          --dataset CIFAR10 --noise-type $noise_type --n-class 10 --lr-u 10 -se 10 --epochs 300 \
          --fraction $fraction --selection *$pruning_algorithm* --save-log True \

where *$pruning_algorithm* must be from [Uniform, SmallLoss, Uncertainty, Forgetting, GraNd, ...], each of which is a class name in deep_core/methods/~~.py.

Citation

@article{park2023robust,
  title={Robust Data Pruning under Label Noise via Maximizing Re-labeling Accuracy},
  author={Park, Dongmin and Choi, Seola and Kim, Doyoung and Song, Hwanjun and Lee, Jae-Gil},
  journal={NeurIPS 2023},
  year={2023}
}

References

We thank the DeepCore library, on which we built most of our repo. Hope our project helps extend the open-source library of data pruning.

• DeepCore library [code] : DeepCore: A Comprehensive Library for Coreset Selection in Deep Learning, Guo et al. 2022.